1,1-二溴-2-(邻羟基苯基)丙烯 | 167558-56-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 1,1-二溴-2-(邻羟基苯基)丙烯
• 英文名称: 1,1-Dibromo-2-(o-hydroxyphenyl)propene
• 英文别名: 2-(2,2-dibromo-1-methylvinyl)phenol；2-(1,1-Dibromoprop-1-en-2-yl)phenol
• CAS: 167558-56-7
• 化学式: C₉H₈Br₂O
• 分子量: 291.97
• InChiKey: UHBQBHHFNDVXPX-UHFFFAOYSA-N

物化性质

• 沸点：
  308.9±27.0 °C(Predicted)
• 密度：
  1.843±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1,1-二溴-2-(邻羟基苯基)丙烯 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 以76%的产率得到3-甲基苯并呋喃
  参考文献：
  名称：

  Electrophilic Reactions of Carbenoids. Synthesis of Fused Heterocyclic Systems via Intramolecular Nucleophilic Substitution of Carbenoids

  摘要：

  Intramolecular nucleophilic substitution of carbenoids with oxygen, nitrogen, and sulfur nucleophiles leading to the synthesis of fused heterocyclic compounds has been studied. For the purpose of this investigation styryl type gem-dihalides 4, 8, 18, 20, 28 containing a nucleophilic substituent in the ortho position of the aromatic ring have been synthesized. Carbenoids have been generated in those systems by the halogen-metal exchange reaction and shown to readily undergo intramolecular nucleophilic substitution by the properly located nucleophilic group (OH, SH, or NH2). As a result a new synthetic route to benzofurans, thianaphthenes, and indoles has been established based on nucleophilic substitution of vinyl halides by an ortho substituent. The dramatic increase of reactivity of vinyl halides upon introduction of lithium has been explained as being due to metal-assisted ionization.

  DOI：

  10.1021/jo00122a046
• 作为产物：
  描述：

  1-[2-(methoxymethoxy)phenyl]ethanone 在 盐酸 、 三苯基膦 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 3.0h， 生成 1,1-二溴-2-(邻羟基苯基)丙烯
  参考文献：
  名称：

  Electrophilic Reactions of Carbenoids. Synthesis of Fused Heterocyclic Systems via Intramolecular Nucleophilic Substitution of Carbenoids

  摘要：

  Intramolecular nucleophilic substitution of carbenoids with oxygen, nitrogen, and sulfur nucleophiles leading to the synthesis of fused heterocyclic compounds has been studied. For the purpose of this investigation styryl type gem-dihalides 4, 8, 18, 20, 28 containing a nucleophilic substituent in the ortho position of the aromatic ring have been synthesized. Carbenoids have been generated in those systems by the halogen-metal exchange reaction and shown to readily undergo intramolecular nucleophilic substitution by the properly located nucleophilic group (OH, SH, or NH2). As a result a new synthetic route to benzofurans, thianaphthenes, and indoles has been established based on nucleophilic substitution of vinyl halides by an ortho substituent. The dramatic increase of reactivity of vinyl halides upon introduction of lithium has been explained as being due to metal-assisted ionization.

  DOI：

  10.1021/jo00122a046

文献信息

• A General and Practical Method of Alkynyl Indole and Benzofuran Synthesis via Tandem Cu- and Pd-Catalyzed Cross-Couplings
  作者：Masatoshi Nagamochi、Yuan-Qing Fang、Mark Lautens

  DOI：10.1021/ol071370w

  日期：2007.7.1

  A new tandem coupling approach to synthesize 2-alkynyl indoles and benzofurans is described. This reaction utilizes easily accessible gem-dibromovinyl substrates and terminal alkynes and proceeds via Pd/C- and CuI-catalyzed tandem Ullman/Sonogashira couplings.

  描述了一种合成2-炔基吲哚和苯并呋喃的新的串联偶联方法。该反应利用容易获得的宝石-二溴乙烯基底物和末端炔烃，并通过Pd / C和CuI催化的串联Ullman / Sonogashira偶联进行。
• Intramolecular cross-coupling of gem-dibromoolefins: a mild approach to 2-bromo benzofused heterocycles
  作者：Stephen G. Newman、Valentina Aureggi、Christopher S. Bryan、Mark Lautens

  DOI：10.1039/b912093a

  日期：——

  Highly useful halogenated benzofurans and benzothiophenes are prepared from readily available gem-dibromoolefins using a mild, ligand-free copper catalyzed cross-coupling procedure.

  采用温和的无配体铜催化交叉偶联程序，从容易获得的二溴烯烃中制备出了非常有用的卤代苯并呋喃和苯并噻吩。
• WO2007/134421
  申请人：——

  公开号：——

  公开（公告）日：——
• [EN] 2-VINYL INDOLES, PYRIDO AND AZEPINO INDOLE DERIVATIVES, 2-ALKYNYL INDOLES, 2-ALKYNYL BENZO[b]FURANS, THEIR PRECURSORS AND NOVEL PROCESSES FOR THE PREPARATION THEREOF<br/>[FR] 2-VINYLINDOLES, DÉRIVÉS PYRIDO ET AZÉPINOINDOLE, 2-ALCYNYLINDOLES, 2-ALCYNYLBENZO[b]FURANNES, LEURS PRÉCURSEURS ET LEURS NOUVEAUX PROCÉDÉS DE PRÉPARATION
  申请人：LAUTENS MARK

  公开号：WO2007134421A1

  公开（公告）日：2007-11-29

  [EN] The present invention relates to the preparation of 2-vinyl indoles from ortho-gem-dibromovinylaniline compounds and alkene reagents using a palladium pre-catalyst, a base, and, in some instances, a ligand or additive. The present invention also relates to the preparation of pyrido and azepino derivatives via a palladium-catalyzed tandem intramolecular Buchwald-Hartwig amination and Heck coupling reaction of appropriately functionalized ortho-gem-dibromovinylanilines. The present invention also relates to the preparation of 2-alkynyl indoles from ortho-gem-dibromovinylaniline compounds and alkyne reagents using a palladium pre-catalyst, a copper pre-catalyst, a base, and a ligand. Novel processes for the preparation of benzo[b]furan compounds are also disclosed, wherein the 2-alkynyl benzo[b]furans are prepared from ortho-gem-dibromovinylphenol compounds and alkyne reagents using a palladium pre-catalyst, a copper pre-catalyst, a base, and a ligand.
  [FR] La présente invention concerne la préparation de 2-vinylindoles à partir de composés ortho-gem-dibromovinylanilineet de réactifs alcène, préparation dans laquelle on utilise un pré-catalyseur à base de palladium, une base, et, parfois, un ligand ou un additif. La présente invention concerne également la préparation de dérivés pyrido et azépino par l'intermédiaire d'une réaction intramoléculaire tandem catalysée par le palladium d'amination de Buchwald-Hartwig et de couplage de Heck d'ortho-gem-dibromovinylanilines convenablement fonctionnalisés. La présente invention concerne également la préparation de 2-alcynylindoles à partir de composés ortho-gem-dibromovinylaniline et de réactifs alcyne effectuée en utilisant un pré-catalyseur à base de palladium, un pré-catalyseur à base de cuivre, une base et un ligand. La présente invention concerne également des nouveaux procédés de préparation de composés benzo[b]furanne, où les 2-alcynylbenzo[b]furannes sont préparés à partir de composés ortho-gem-dibromovinylphénol et de réactifs alcyne en utilisant un pré-catalyseur à base de palladium, un pré-catalyseur à base de cuivre, une base et un ligand.
• Electrophilic Reactions of Carbenoids. Synthesis of Fused Heterocyclic Systems via Intramolecular Nucleophilic Substitution of Carbenoids
  作者：Marek Topolski

  DOI：10.1021/jo00122a046

  日期：1995.9

  Intramolecular nucleophilic substitution of carbenoids with oxygen, nitrogen, and sulfur nucleophiles leading to the synthesis of fused heterocyclic compounds has been studied. For the purpose of this investigation styryl type gem-dihalides 4, 8, 18, 20, 28 containing a nucleophilic substituent in the ortho position of the aromatic ring have been synthesized. Carbenoids have been generated in those systems by the halogen-metal exchange reaction and shown to readily undergo intramolecular nucleophilic substitution by the properly located nucleophilic group (OH, SH, or NH2). As a result a new synthetic route to benzofurans, thianaphthenes, and indoles has been established based on nucleophilic substitution of vinyl halides by an ortho substituent. The dramatic increase of reactivity of vinyl halides upon introduction of lithium has been explained as being due to metal-assisted ionization.